A United States statute, which established a Federal (as opposed to State) law of unfair competition, as well as antitrust provisions and which also enacted the modern U.S. Federal trademark law. The trademark portion of the Act is codified at 15 U.S.C. §§ 1051-1157. The antitrust provisions of the Lanham Act are administered by the United States Federal Trade Commission (FTC). Before the Lanham Act was adopted in 1946 and went into effect in 1947 the US had no national trademark system.